Drill magazine and chuck.



W. E. SWEET. DRILL MAGAZINE AND CHUCK. APPLICATION FILED 06129, '1910.

EETTEE STATES PATENT EETE.

WELCOME F. SWEET, OF ST. LOUIS, MISSOURI.

DRILL MAGAZINE AND CHUCK.

LZZUM.

To all 'whom t may concern.'

Be it known that VVELOOME F. SWEET, a citizen of the United States,residing at St. Louis, Missouri, have invented a certain new and usefulImprovement in Drill Magazines and Chucks, of which the following is afull, clear, and exact description, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, forming part o-f thisspecification, in which-- Figure 1 is a sectional view of my improveddevice. Fig. 2 is a cross sectional view taken substantially on the linea-a of Fig. 1. Fig. 3 is a detached view of the mandrel showing a slightmodification. Fig. 4 illustrates a portion of the device in section.Fig. 5 is a vertical section taken through the lower end of thepreferred form of the mandrel used in connection with my impro-vedmagazine and chuck.

My invention relates to an improvement in a magazine and chuck fordrills to be used more especially in connection with an ordinary drillpress. It is the common occurrence in shops where small tools are usedthat these tools are often misplaced and therefore considerable time isrequired to nd them.

It is the object of my improvement to provide a magazine in which anumber of different sizes of drills are retained and which may beapplied to a drill press in such a manner that -any special drill may bepositioned in the mandrel of the press whenever desired.

Referring to the drawings 1 indicates the ordinary mandrel with taperingshank 2 to be positioned within the drill press. 8 is a cylindricalportion of the mandrel having a projecting pin 4 at one side thereof.Extending from the cylindrical portion 3 is a threaded portion 5 ofsmaller diameter than the portion 3 and connected thereto by means of aconical portion 6.

The mandrel and especially the portions 3, 5, and 6 is split by means ofa slot 7 passing therethrough having a smaller slot 8 connected at oneend thereof, and a similar slot 9 at the opposite end forming shoulders10 between the slots 7 and 8 and shoulders 11 between the slots 7 and 9.The slots 8 and 9 are of less width than the slot 7 and the slot 8 asshown in Fig. 1 extends from a point near the top of the cylindricalp0r- Specication of Letters Patent.

Application filed October 29, 1910.

Patented Apaa, i912.

Serial No. 589,824.

tion 3 in a substantially curved line to a point intersecting the top ofthe slot 7. Surrounding this cylindrical portion 3 of the mandrel is aslidable sleeve 12 having a slot 13 at one side in which the pin 4 ispositioned. Opposite this slot 13 is a pivoted ejector member 14 mountedin a slot in the sleeve 12, which is pivoted on a pin 15 so that itsupper end swings in the slot 8 and extends down through the slots 7 and9 as shown, for example in the dotted line position in Fig. 1. Thisejector member 14 is operated by a rod 16 connected with lugs 17 on theejector member and extending to a head 18 on the outside of the magazinecasing.

At its upper end the sleeve 12 is exteriorly screw threaded for thereception of a cap 19 through which the operating rod 16 passes. Asupporting bracket 20 is suitably connected to the cap piece 19 andextends out to one side of the casing with a slot 21 therein having across pin 22 upon which is slidably mounted a pusher 23, which pusherhas a slot 24 inclosing the pin 22.

The sleeve 12 is provided with projecting portions 25 and 26 as shown inFig.` 4. The portions 25 and 26 are slotted of the same width as theslots 8 and 9 in the mandrel, and at the side thereof directly in frontof the slots in the mandrel. If desired, however, the slots may be allof the same width as the slot 7 in the mandrel.

Surrounding the sleeve 12 is the magazine casing comprised of threeseparate pieces, the upper 27, intermediate 28 and lower 29. The uppersection 27 fits upon the cap 19 so as to rotate thereon, and has aprojecting portion or flange 30 which is slotted entirely around theperiphery for the reception of a number of drill heads. This section 27extends down and is supported on the intermediate piece 28 which has aprojection 31 interior of the casing 27. The intermediate section 28also has a flange 32 which is slotted in a similar manner to flange 80with radial slots extending all around the periphery for the receptionof the shanks of a series of drills. The upper portion of this flange 32is suitably beveled as indicated at 33. The flanges 30 and 32 arepositioned at the same altitude in the chuck as the flanges 25 and 26 onthe sleeve 12.

The lower portion of the casing 29 is made of pyramidical form having anupper bearing surface 34 for the intermediate section 28 and also servesas a support therefor. At its lower end the pyramidical section 29 isrotatably mounted on the sleeve 12. The sleeve 12 at the lower end hasan outstanding flange 85 forming a support for a rotatable ring 36 witha projecting flange 37 eX- tending between the flange 35 on the sleeveand the lower end of the section 29. The lower end of the sleeve 12 isalso provided with an interiorly projecting inclined or tapered lug 37.The ring 36 is suitably connected by screws or otherwise to a nut member38 which is provided with opposite interior lugs 39, and has a taperedportion 40 interior thereof for engaging the portion 6 of the mandrel.

Mounted wit-hin the magazine casing are a series of drills l1 of'varioussizes and sorts upon the inclined faces 38 of the flanges 32. Thesedrills being arranged around the enltire periphery of the magazine asillustrated in Fig. 2 with their inner ends substantially abutting. Theheads of these drills are of suitable shape to fit within the slo-t 7and also between the flanges 30 and 32 of the outer casing. If desiredthe upper portion of said head may be made of smaller section to fitwithin the slots in the flanges 25 and 30, and also within the slot 8.The slots in the flanges 26 and 32 are made large enough to accommodatethe various sizes of drill shanks, so that these drills may bepositioned within the magazine as shown in Fig. 1.

The sections 27 and 28 of the outer casing are suitably slot-ted for thereception of the pusher member 23 opposite each drill and the bracket 20is at a distance from the casing to allow the withdrawal of the pusherfrom the slot in the casing. This slot is also of suitable shape toallow the pusher being inserted in the dotted line position shown inFig. 1, where it will be out of the way when the drill is in use.

Vhen it is desired to insert a drill into the mandrel of a certain sizethe pusher is withdrawn and the outer casing of the magazine rotateduntil the proper drill is positioned in front of the bracket 20 andpusher 23. If desired the position of the various drills in the magazinemay be indicated by numerals or otherwise on the periphery of the casing27. The pusher 23 is then operated to push the drill head and shankwithin t-he slot of the split mandrel in the dotted line position ofFig. 1. The pusher may then be withdrawn and placed in the dotted lineposition shown in Fig. 1, and the whole chuck raised to the dotted lineposition of this figure, when by rotation of the nut 38 the lugs 39thereon engage the threaded port-ion of the mandrel 5 tending to clampthe head of the drill by drawing together the two split portions of themandrel. The

inclined portion 37 is brought into engagement with the front of thedrill head to also aid in clamping the drill in position. After thedrill has been used the nut is unscrewed and the chuck dropped.

To eject the drill from the mandrel and to return said drill to itsproper po-sition within the housing, the head 18 on the upvper end ofthe rod 16 is engaged and pulled upward thereby swinging the upperportion of the ejector member 111 inward as shown by the dotted lines inFig. 1, and the upper end of said ejector member engages against thehead of the drill and pushes the same out of the slot 17 and forces saidhead into its normal position within the drill housing.

In order to cause the return of the ejector member 14 to its normalposition as shown by full lines in Fig. 1, and to normally maintain saidmember in such position, a retractile coil spring is arranged on the rod16 between the head 18 and the housing, and the ends of which retractilespring are connected to said head and housing.

If for any reason a drill is broken or needs sharpening it may beremoved by unscrewing the cap 19, which leaves room for the withdrawalof the drill or insertionv of a new drill.

I have also shown in Fig. 3 a slight modifica-tion in providing a boredsection 42 made large enough to accommodate any drills of a larger sizethan could be placed within the magazine of the chuck, so that a largersized drill could be used without removing the magazine from t-he drillpress.

It is to be understood that the slot 7 of greatest width extends onlysubstantially a little way beyond the center-of the mandrel so as toform a shouldered backing for the drill head when in position within themandrel, and that the inclined portion of the sleeve 37 bears againstthe opposite side of the head in order to clamp the headv firmly inproper position. This clamping action is an addition to that produced bythe screwing of the nut on the mandrel, whereby the two portions of themandrel are drawn together.

It is also to be noted that some of the parts as, for example, section29 and ring member 36 are formed in two parts in order to be easilymanufactured and placed upon the other parts of the device.

Although I have referred to the tools mounted in the magazine as drills,I do not intend to be limited thereto, but mean to include any toolswhich may be insert-ed within the mandrel to be operated by a rotarymovement, such as punches, countersinks and bores, screw drivers, etc.

I am aware that minor changes may be made in the construction,arrangement and combination of the various parts of mydevice withoutdeparting from the nature and spirit of my invention, the scope of whichis indicated in the accompanying claims.

I claim:

1. In a device of the character described, a mandrel having` al slottherein, a magazine for drills supported by said mandrel, a series ofdrills mounted in the magazine, means whereby a drill may be inserted inthe slot in the mandrel and means for ejecting the drill from themandrel.

2. In a device of the character described, a mandrel having a slottherein, a drill magazine supported by said mandrel, a series of drillsmounted in said magazine radially of the mandrel, means whereby saidmagazine may be rotated to present a drill in position in :front of theslot in the mandrel, and means for inserting the drill in the slot inthe mandrel,

3. In a device of the character described, a mandrel having a slottherein, a drill magazine supported by said mandrel, a series of drillsmounted in said magazine radially of the mandrel, means whereby saidmagazine may be rotated to present a drill in position in front of theslot in the mandrel, means for inserting the drill in the slot in themandrel, and means for clamping said drill in position in the mandrel.

4. In a device of the character described, a mandrel having a slottherein, a drill magazine mounted on the mandrel, comprising means forretaining a series of drills in position, means for inserting a drillwithin the mandrel, means for clamping said drill in position in themandrel and means for ejecting the drill from the mandrel.

5. In a device of the character described, a slotted mandrel, arotatable magazine mounted on said mandrel adapted to position a seriesof drills radially thereon, and a pusher mounted on a iixed supportadapted to insert a predetermined drill within the slot in the mandrel.

6. In a device of the character described, in combination, a slottedmandrel, a rotatable magazine mounted on said mandrel adapted toposition a series of tools radially thereon and opposite the slot in themandrel, and an ejector for withdrawing a tool from the mandrel to placeit within the magazine.

7. In a device of the character described, a slotted mandrel, arotatable magazine mounted on said mandrel adapted to position a seriesof drills radially thereon, a pusher mounted on a liXed support adaptedto insert a predetermined drill within the slot in the mandrel, and apivoted ejector for withdrawing the drill from the mandrel.

8. In a device of the character described, a slotted mandrel, a drillmagazine mounted thereon comprising means for retaining in position aseries of drills radially of the mandrel, means for inserting a drillwithin the slot in the mandrel, means whereby the magazine may be movedlongitudinal of the mandrel, and means on the magazine for clamping thedrill in position in the mandrel.

9. In a device of the character described, a slotted mandrel having anexternal screw thread thereon, a drill magazine adapted to position aseries of drills therein, means for rotating said magazine to presentany desired drill in front of the slot of the mandrel, means forinserting the drill within the slot in the mandrel, means for moving themagazine longitudinally of the mandrel, and means for engaging the screwthreaded portion of the mandrel to hold the magazine in position.

10. In a device of the character described, a slotted mandrel, a drillmagazine mounted thereon comprising a sleeve portion longitudinallymovable on the mandrel, means for retaining a series of drills inposition in the magazine, means for rotating said magazine about thesleeve to position any desired drill in front of the slot in themandrel, means mounted on the sleeve for inserting a drill within themandrel.

11. In a device of the character described, a slotted mandrel, a drillmagazine mounted thereon comprising a sleeve portion longitudinallylmovable on the mandrel, means for retaining a series of drills inposition in the magazine, means for rotating said magazine about thesleeve to position any desired drill in front of the slot in themandrel, means mounted on the sleeve for inserting a drill within themandrel, and means mounted on the sleeve for ejecting the drill from themandrel.

12. In a device of the character described, a slotted mandrel, a drillmagazine mounted -thereon comprising a. sleeve portion longitudinallymovable on the mandrel, means for retaining a series of drills inposition in the magazine, means for rotating said magazine about thesleeve to position any desired drill in front of the slot in themandrel, means mounted on the sleeve for inserting a drill within themandrel, and means mounted on the sleeve for clamping the drill withinthe mandrel.

13. In a device of the character described, a slotted mandrel, a pinprojecting therefrom, a sleeve surrounding said mandrel, having a slotembracing the pin on the same, a cap attached to said sleeve, a casingrotatably mounted on the sleeve and cap, and means in the casing forsupporting a series of drills.

14. In a device of the character described, a slotted mandrel, a pinprojecting therefrom, a sleeve surrounding said mandrel, having a slotembracing the pin on the same, a cap attached to said sleeve, a casingrotatably mounted on the sleeve and cap, means in the casing forsupporting a series ot' drills, a bracket supported on the cap, and apusher on the bracket adapted to insert a drill Within the mandrel.

15. In a device of the character described,

a slotted mandrel, a drill magazine having means for supporting a seriesof drills therein, means for rotating said magazine about the mandrel,means extending eXteriorly of the magazine for inserting any desireddrill within the slot in the mandrel.

16. In a device of the character described, a slotted mandrel, a drillmagazine having means for supporting a series of drills therein, meansfor rotating said magazine about the mandrel, means extending exteriorlyof the magazine for inserting any desired drill Within the slot in themandrel, and means operated eXteriorly of the magazine for ejecting thedrill from the mandrel.

In testimony whereof I hereunto aliX my signature in the presence of twoWitnesses, this 19th day of October, 1910.

WTELCOME F. SWEET.

Wvitnesses M. I). SMITH, J. YV. CLIFT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

